Secunia Research: McFunSoft Products NCTAudioFile2 ActiveX Control Buffer Overflow

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                     Secunia Research 24/01/2007

 - McFunSoft Products NCTAudioFile2 ActiveX Control Buffer Overflow -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

McFunSoft iPod Audio Studio 6.2.4
McFunSoft Recording to iPod Solution 5.1
McFunSoft iPod Music Converter 5.1
McFunSoft Audio Recorder for Free 6.1
McFunSoft Audio Editor 6.3.3 Build 489
McFunSoft Audio Studio 6.6.3 Build 479

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

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3) Vendor's Description of Software 

Product Links:
http://www.mcfunsoft.com/ias/
http://www.mcfunsoft.com/rtis/
http://www.mcfunsoft.com/imc/
http://www.mcfunsoft.com/arf/
http://www.mcfunsoft.com/mae/
http://www.mcfunsoft.com/mas/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in various McFunSoft
products, which can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to a boundary error in the
NCTAudioFile2.AudioFile ActiveX control when handling the
"SetFormatLikeSample()" method. This can be exploited to cause a 
stack-based buffer overflow by passing an overly long string (about 
4124 bytes) as argument to the affected method.

Successful exploitation allows execution of arbitrary code when a user
e.g. visits a malicious website.

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5) Solution 

Set the kill-bit for the affected ActiveX control.

Use another product.

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6) Time Table 

17/01/2007 - Vendor notified.
24/01/2007 - Public disclosure.

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7) Credits 

Discovered by Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-0018 for the vulnerability.

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9) About Secunia

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-29/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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